Code Definition

P025C — Fuel pump control module circuit low

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P025C

P025C is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P025C is stored, the module has detected a signal or supply voltage lower than the expected operating range.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P025C is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The P025C fault code is set when the Engine Control Module (ECM) detects a lower than expected voltage in the circuit of the fuel pump control module. This low voltage condition indicates an issue in the electrical system related to the fuel pump control module, which is responsible for regulating the operation of the fuel pump. The low voltage could be caused by various factors, including poor connections, a failing module, or issues in the power supply to the module.

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